fix(backend): 兼容 Python 3.14 使用 ruamel.yaml 回退

Author: EndlessPixel

backend/app_config.py

@@ -7,8 +7,23 @@
 
 try:
     import yaml
+    _YAML_LOADER = "pyyaml"
 except ImportError:
-    yaml = None
+    try:
+        # ruamel.yaml 为纯 Python 实现，兼容 Python 3.14（PyYAML 的 C 扩展在 3.13+ 无法构建）
+        from ruamel.yaml import YAML as _RuamelYAML
+        _yaml_loader = _RuamelYAML(typ="safe")
+        def _safe_load(stream):
+            return _yaml_loader.load(stream)
+        class _YamlShim:
+            @staticmethod
+            def safe_load(stream):
+                return _safe_load(stream)
+        yaml = _YamlShim
+        _YAML_LOADER = "ruamel"
+    except ImportError:
+        yaml = None
+        _YAML_LOADER = None
 
 BASE_DIR = Path(__file__).parent.parent
 CONFIG_PATH = BASE_DIR / "config.yml"

requirements-unix.txt

@@ -5,4 +5,5 @@ psutil==5.9.8
 py3nvml==0.2.7
 python-multipart==0.0.6
 python-dotenv==1.0.0
-pyyaml==6.0.1
+pyyaml>=6.0.2
+ruamel.yaml>=0.17.40

requirements-windows.txt

@@ -6,5 +6,6 @@ psutil==5.9.8
 py3nvml==0.2.7
 python-multipart==0.0.6
 python-dotenv==1.0.0
-pyyaml==6.0.1
+pyyaml>=6.0.2
+ruamel.yaml>=0.17.40
 wmi==1.5.1